Apologies for poor quality, I recorded this by pointing my webcam at the monitor. The old XB360 has no inbuilt game recording facilities.
Anyway, this took me AGES. At one point I heard voices singing along to that damn tune: "you want top roach, but you're never gonna get it, you want top roach, but you're never gonna get it".
Once I figured out how to get myself "locked" on the big rock after the long jump, and how to get out of that, this suddenly became a whole lot easier (still bloody tough though). I made it to that final major obstacle 13 times on zero faults before I nailed it first time (actually, I also got past it on the 11th occasion, then screwed up the easy bit afterwards cos my hands were like jelly).
Good luck to anyone trying this.